Ph Values At Various Temperature - Hanna Instruments HI8510 Instruction Manual

pH VALUES AT VARIOUS TEMPERATURE

Temperature has an effect on the pH. The calibration buffer solutions
are affected by temperature changes to a lesser degree than normal
solutions.
Please refer to the following chart to perform the pH calibration:
TEMP
ºC ºF
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122
55 131
60 140
65 149
70 158
For instance, if the buffer temperature is 25 °C (77 °F), calibrate to
read on the display pH4.01 or 7.01 or 10.01. If the buffer temperature
is 20 °C, calibrate to read on the display pH4.00 or 7.03 or 10.06.
If the buffer temperature is 50 °C, calibrate to read on the display
pH4.06 or 6.98 or 9.82.
pH BUFFERS
4.01 6.86 7.01
4.01 6.98 7.13
4.00 6.95 7.10
4.00 6.92 7.07
4.00 6.90 7.05
4.00 6.88 7.03
4.01 6.86 7.01
4.02 6.85 7.00
4.03 6.84 6.99
4.04 6.84 6.98
4.05 6.83 6.98
4.06 6.83 6.98
4.08 6.84 6.98
4.09 6.84 6.98
4.11 6.84 6.99
4.12 6.85 6.99
30
9.18 10.01
9.46 10.32
9.39 10.24
9.33 10.18
9.27 10.12
9.22 10.06
9.18 10.01
9.14 9.96
9.11 9.92
9.07 9.88
9.04 9.85
9.01 9.82
8.99 9.79
8.97 9.77
8.95 9.76
8.93 9.75